import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description: 牛客网.入门题.交换变量值
 */

//方法二
class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();

        //write your code here.......
        a = a + b;
        b = a - b;
        a = a - b;
        System.out.println(a+" "+b);
    }
}

//方法一
class Main1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();

        //write your code here.......
        a ^= b;
        b ^= a;
        a ^= b;
        System.out.println(a+" "+b);
    }
}

public class Test {
}
